Sentences with phrase «researchers estimate populations»

The model used in the study could also help researchers estimate populations of protected species present in others area of potential impacts, such as from fisheries, energy extraction operations, and military exercises.

Building on previous estimates on the overall irregular migrant population and including recent migration in - and out - flows, COMPAS researchers estimate a population of 120,000 irregular migrant children in the UK — that is the 0.9 per cent of overall UK's under 18 population.

Not exact matches

«This scenario reconciles the discrepancy in the nuclear DNA and mitochondrial DNA phylogenies of archaic hominins and the inconsistency of the modern human - Neanderthal population split time estimated from nuclear DNA and mitochondrial DNA,» says researcher Johannes Krause, also of the Max Planck Institute for the Science of Human History.

As a result, once - eliminated diseases are making a comeback (to stop a disease from spreading, researchers estimate around 95 % of the population must be immune).

Due to the county's lack of diversity — the population of about 150,000 is predominantly white — the researchers used only the nationwide white population to estimate prevalence, so the result may not be representative of other populations.

Using annual population estimates from the Russian Federal Agency of Game Mammal Monitoring database, researchers analyzed trends of eight large mammals — roe deer, red deer, reindeer, moose, wild boar, brown bears, lynx, and gray wolves — in Russia from 1981 to 2010, a time period that includes the 1991 collapse of the Soviet Union.

NEW DELHI — Hot on the heels of a study that used feces to track penguin populations from space (ScienceNOW, 6 June), researchers in India are reporting that DNA from tiger poop can help them estimate the cat's numbers in the wild.

«Both estimates are higher than published rates for the general U.S. population, suggesting that special attention should be paid to these conditions among bariatric patients,» the researchers write.

Researchers estimate that as much as 7 % of the population has dyscalculia, which is marked by severe difficulties in dealing with numbers despite otherwise normal (or, in Moorcraft's case, probably well above normal) intelligence.

The researchers did a small study of existing genetic data from the human skin microbiome and estimate that 20 percent of the human population have S. epidermidis strains that make 6 - HAP on their skin, Gallo says.

Leading researchers now estimate that two - thirds of the world's population already live under conditions of severe water scarcity at least one month of the year.

In this study, researchers at Emory University, CDC, and the University of Washington used network - based mathematical models of HIV transmission in a population of MSM to estimate the impact of applying these CDC guidelines to prevent new HIV infections in the U.S..

Based on the pooled sample, researchers estimated average annual numbers and costs for the U.S. population.

For example, the researchers estimated that one percent of women have a risk of breast cancer that is more than 3 times greater than the population at large.

UK researchers at the London School of Hygiene & Tropical Medicine and the Farr Institute of Health Informatics estimate that over 12,000 cases of these 10 cancers each year are attributable to being overweight or obese, and calculate that if average BMI in the population continues to increase, there could be over 3500 extra cancers every year as a result.

The study estimates age - adjusted diabetes prevalence for 200 countries — meaning that researchers adjusted the results to account for diabetes becoming more common as a person ages and for some countries having older populations.

Such data, Durgana said, help researchers then estimate the number of unlisted victims or the unknown population.

The researchers discovered, however, that this is most probably not the case; they estimate that around 72» 000 years ago, an ancestral population common to Aborginal Australians, Europeans and East Asians left the African continent.

Writing in the journal Proceedings of the National Academy of Sciences (PNAS), the researchers outline how satellite imagery, geolocation technology, small area surveys, statistical methods and computing power can come together to map high - resolution national population estimates, comparable or exceeding the level of detail of those derived from census material and with the ability to interrogate information down to the local scale.

The Harvard T.H. Chan School of Public Health researchers found that men, blacks, and low - income populations had higher risk estimates from PM2.5 exposure compared with the national average, with blacks having mortality risks three times higher than the national average.

And the researchers estimate that the prevalence of chronic pain in the UK is now around 43 %, equating to around 28 million people, based on population stats for 2013.

By linking their database of environmental impacts to the individual, self - reported diets in the National Health and Nutrition Examination Survey, the U-M and Tulane researchers were able to estimate the distribution of diet - related impacts across the entire U.S. population on a given day.

In a confidential paper leaked early last month, researchers at the Norwegian Computing Centre and the University of Oslo revealed that three errors in computer software had made the original population estimate of 86 700 too high.

Researchers say they hope their study opens the door to better diagnosis and treatment of the most common and often intractable sleep disorder that affects an estimated 15 percent of the United States population.

To monitor isolated populations over time, FUNAI researchers conduct regular flyovers, taking aerial photos of houses and fields, estimating populations, and noting hair styles and patterns of body paint.

In a paper published recently in the journal PLOS ONE, a team of researchers from several Western institutes estimated the number of people living in low - elevation coastal zones, as well as the scale of the population at risk from one - in -100-year storm surge events, by using scenario - based projections.

Researchers have estimated that during the last Ice Age, parts of Siberia may have had an average population density of sixty animals per hundred square kilometres - equivalent to African elephants today.

To make mortality estimates, the researchers took temperature projections from 16 global climate models, downscaled these to Manhattan, and put them against two different backdrops: one assuming rapid global population growth and few efforts to limit emissions; the other, assuming slower growth, and technological changes that would decrease emissions by 2040.

Depending on the particular route travelled by each ship, the researchers estimated the probability that a species survives the journey and establishes a population in subsequent ports of call.

The researchers also estimated ancient Denisovan population sizes by using methods to estimate the age of various gene lineages and the amount of difference between the chromosomes the girl inherited from her mother and father.

Wildlife Conservation Society researcher Ullas Karanth talks about his July, 2016, Scientific American article on state - of - the - art techniques for tracking tigers and estimating their populations and habitat health.

The annual costs of dementia care, estimated by RAND researchers to be between $ 159 billion and $ 215 billion, could more than double by 2040 if the age - specific prevalence rate of the disease remains constant as the nation's population grows older.

The researchers also note, as the data is drawn from web surveys, there will be biases inherent in the respondents — the ones who chose to respond may be more experienced in the drug culture, and as such may not be representative of the wider population, so it is important not to interpret the findings reported as prevalence estimates.

Combining these measurements with estimates of the populations of algae, zooplankton, and fish taken from regular net catches, the researchers report that they detected unusual oscillations in the amount of algae in the lake more than a year before the lake's food web shifted.

The analysis, formulated by U.N. and University of Washington (UW), Seattle, researchers, is the first of its kind to use modern statistical methods rather than expert opinions to estimate future birth rates, one of the determining factors in population forecasts.

In order to create effective conservation programs to help protect and conserve populations of endangered snow leopards, whose estimated population is between 4,500 - 7,500 in the wild, University of Delaware researchers are studying their scat to try and understand what the large cats are eating.

Weiskopf explained that a big problem with collecting and identifying scat in the field is that researchers mostly rely on morphological characteristics such as shape, size or associated signs of snow leopards, and since scat from different species can look similar, this can lead to misrepresented population estimates and errors in reporting what the snow leopards are actually eating.

Plugging their data into models that account for the range of plastic waste entering the ocean via different coastal populations, the researchers arrived at their estimated 11.1 billion pieces of coral - entangling plastic.

While previous studies have looked at the connections between specific defects and the risk of any cancer, or specific cancers and birth defects generally, «what's missing [are] good, population - based estimates of the risk of specific cancers and associations with specific birth defects,» says coauthor Jeremy Schraw, a postdoctoral pediatric cancer researcher at Baylor College of Medicine, during a press conference at AACR.

While severe zinc deficiency can cause a variety of extreme symptoms, researchers estimate that a large percentage of the world's population may have a mild zinc deficiency.

Dr. Fasano's team estimates the condition affects 6 percent to 7 percent of the population (around one in five people), but other researchers (and advocates) place the number far higher — perhaps as high as 50 percent of the population.

Researchers estimate that 50 percent of the general population is at risk of vitamin D deficiency and insufficiency, and this percentage rises in higher - risk populations such as the elderly and those with darker skin

The researchers estimate the statistical relationship between the size of the Catholic population in 1900 and the extent of private schooling today and use this estimate to isolate the causal effect of private school competition on contemporary student achievement.

Although it is difficult to get an accurate picture of the immigrant population in the United States, researchers estimate that 1.8 million undocumented children and youth are now living in the country.

Impacts of Free - ranging Domestic Cats (Felis catus) on birds in the United States: A review of recent research with conservation and management recommendations (2009) HAHF cites the 2009 paper co-authored by former Smithsonian researcher Nico Dauphiné (who resigned after being found guilty of attempted animal cruelty last year, after rat poison was found in cat food outside her apartment building) as evidence of «the incredible impact of free ranging cats on the bird populations of the U.S.» Among the many flaws in «Impacts of Free - ranging Domestic Cats» was the authors» estimate of «117 to 157 million exotic predators,» which was based on David Jessup's inflated (and, not surprisingly, unattributed) «estimate» of «60 to 100 million feral and abandoned cats.»

Merging the estimates of cat populations with a range of estimates for kill rates, the researchers concluded that cats kill 1.3 to 4 billion birds and 6.3 to 22.3 billion mammals annually.

By returning year after year to the same area to count the sharks, the researchers can get a better estimate of population trends.

Marco Springmann, post-doctoral researcher in population health at the Oxford Martin Programme on the Future of Food at Oxford University, UK, and colleagues report in The Lancet that their study of the impact of climate change on diet and bodyweight is the first of its kind, and the first to estimate the possible number of deaths in 155 countries.

This multilevel AR model enables researchers to estimate the average inertia in the population and to use observed person - level variables as predictors for the inertias, to see which person characteristics are related to regulatory weakness.

Given the high public cost associated with child maltreatment, the researchers estimated that communities implementing Triple P were able to recoup their investments (media campaign and training for child and youth workers) in less than 1 year.45 The population - level study on younger children shed a light on the fact that similar findings might result if a population approach is used on parents with adolescents.